California DMV Motorcycle Knowledge Test (M1)Lane Position and VisibilityMedium

You are riding on a multi-lane road and notice a vehicle in the lane to your left beginning to drift into your lane without signaling. What is your immediate and safest response?

  1. AHonk your horn continuously and maintain your speed.
  2. BMove immediately to the far right of your current lane, even if it's close to the shoulder.
  3. CAccelerate quickly to get ahead of the drifting vehicle.
  4. DSlow down and create space, preparing to move to another lane if necessary.
Show answer & explanation

Correct answer: D. Slow down and create space, preparing to move to another lane if necessary.

The safest immediate response is to slow down and create a space cushion around yourself. This gives you time to assess the situation and react further, such as changing lanes if the drift continues, without putting yourself in a direct collision path.

Why the other options are wrong

  • A. Honking might alert the driver but maintaining speed risks a collision if they continue drifting.
  • B. Moving immediately to the far right might put you into a less safe position or another vehicle's path.
  • C. Accelerating could put you directly in the path of the drifting vehicle if they accelerate too.

Unsignaled Lane Drift Response

When another vehicle drifts into your lane without signaling, the safest response is to decelerate and create space, allowing for further evasive action if needed.

  • Prioritize creating a space cushion.
  • Be prepared for evasive maneuvers.
  • Avoid aggressive or unpredictable reactions.

Memory trick: Drift Alert: Slow, Space, Survive.

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